Support bracket

ABSTRACT

A concrete pathway formwork system, including a formwork panel for forming adjacent concrete panels of a pathway, and a support bracket for supporting the system relative to a ground surface, wherein the formwork panel has a pair of vertically opposed longitudinal rails, and the support bracket has an engagement formation which has an unlocked orientation for inserting the formation between the opposed rails to abut against the formwork panel and a rotated, locked orientation wherein the formation is locked by the rails against lateral withdrawal from the formwork panel.

PRIORITY

This application claims priority to and the benefit of AustralianApplication No. 2018904425, filed Nov. 19, 2018, and AustralianApplication No. 2019264633, filed Nov. 14, 2019 the entire contents ofeach of which are incorporated herein by reference.

FIELD OF THE INVENTION

The present invention relates to a formwork system and, morespecifically, but not exclusively, to a formwork system for formingconcrete panels of a pathway, footpath, sidewalk or the like.

BACKGROUND TO THE INVENTION

It is known to use a plastic concrete shuttering system for formingconcrete slabs or panels, such as in a pathway, footpath, side wall orthe like. In particular, there is a concrete formwork system availableunder the trade mark “K-Form” which provides screed rails having across-sectional shape generally of an inverted T. However, the applicanthas identified that existing formwork systems use metallic dowels whichare prone to corrosion. The corrosion can lead to failure of the dowelsresulting in adjacent panels no longer being kept level, or at least indeterioration of appearance where the corrosion becomes visible.Furthermore, the applicant has identified that it would be desirable forthere to be provided a formwork system with improved cost-effectiveness.

Examples of the present invention seek to avoid or at least ameliorateone or more disadvantages of existing concrete formwork systems.

SUMMARY OF THE INVENTION

In accordance with the present invention, there is provided a formworkpanel for forming adjacent concrete panels of a footpath, and a supportbracket for supporting the system relative to a ground surface, whereinthe formwork panel has a pair of vertically opposed longitudinal rails,and the support bracket has an engagement formation which has anunlocked orientation for inserting the formation between the opposedrails to abut against the formwork panel and a rotated, lockedorientation wherein the formation is locked by the rails against lateralwithdrawal from the formwork panel.

Preferably, the formation is unlocked from the opposed rails by rotationof the formation about a lateral axis of the system from the lockedorientation to the unlocked orientation.

Preferably, the bracket is supported relative to the ground surface by astake, and the bracket has an aperture for receiving a stake.

Preferably, the stake is threaded. More preferably, the threaded stakehas opposed faces and the bracket is formed with rotationally spacedengagement portions such that the stake is able to be freely slidthrough the bracket and locked by rotating the stake about itslongitudinal axis relative to the bracket.

Preferably, the bracket terminates above a lower edge of the formworkpanel.

Preferably, the formwork panel is formed as a unitary part.

Preferably, the formwork panel has a pair of opposed sidewalls formedintegrally with at least one rib, the opposed sidewalls defining a voidtherebetween.

In a preferred form, the bracket is formed as a unitary part.

Preferably, the bracket has a central rib extending along the length ofthe bracket.

There is also disclosed a dowel for controlling relative level betweenadjacent panels, wherein the dowel is formed of corrosion-free materialso as to avoid corrosion of the dowel.

Preferably, the adjacent panels are concrete panels.

Preferably, the dowel is formed of material which is non-metallic.

Preferably, the dowel is formed of a polymer material.

Preferably, wherein the dowel is formed of a plastic material.

In one form, the dowel is formed of a metal material portion covered ina polymer material portion. More preferably, the polymer materialportion seals within itself the metal material portion in an air-tightseal.

Preferably, the dowel is formed from material to avoid corrosion fromoxidation of the dowel.

Preferably, the dowel is substantially planar. More preferably, thedowel is in the form of a plate.

Preferably, opposed edges of the dowel are tapered inwardly toward acentral axis of the dowel, the central axis lying within a plane of thedowel. More preferably, tapering of said opposed edges of the platedowel is configured to allow, in situ, lateral movement between theadjacent concrete panels once the panels contract during drying of theconcrete.

In a preferred form, the dowel has a cross-ribbed structure on an uppersurface and on a lower surface to increase structural rigidity.

Preferably, the dowel has rounded corners. More preferably, the roundedcorners are radiused.

Preferably, the dowel has rounded edges. More preferably, the roundededges are radiused.

Preferably, the dowel has a flange arranged to abut against a sideformthrough which the dowel is inserted. More preferably, the flange extendsin a plane perpendicular to the plane of the plate dowel. Even morepreferably, the flange is adapted to seal against the sideform so as toprevent ingress of concrete to a joint between adjacent concrete panels.

In a preferred form, the dowel is adapted for use in a non-industrialapplication.

It is preferred that the dowel is adapted for being cast into a concretefootpath so as to transfer load between adjacent concrete panels of thefootpath.

There is also disclosed a concrete footpath formwork system including adowel for transferring load between adjacent concrete panels, whereinthe dowel is a dowel as described above.

There is also disclosed a concrete footpath formwork system including asideform for forming adjacent concrete panels of a footpath and a doweladapted to extend through the sideform for transferring load between theadjacent concrete panels, wherein the dowel is a dowel as describedabove.

Preferably, the sideform is formed as a unitary panel having one or moreribs between opposed faces to facilitate crushing of the sideform inresponse to expansion of the concrete panels.

More preferably, the sideform panel is substantially planar and arrangedto extend perpendicular to a surface of the footpath.

There is also disclosed a sleeve for a dowel, wherein the sleeve isadapted to clip on to formwork through which the dowel is inserted.

Preferably, the sleeve includes a flange for abutting against theformwork, a sleeve portion extending from the flange, an upper ribsupporting the sleeve portion relative to the flange and a lower ribsupporting the sleeve portion relative to the flange. More preferably,the flange includes an upper flange portion for engagement with an upperrail of the formwork and a lower flange portion having resilient clipsfor clipping behind a lower rail of the formwork.

Even more preferably, the sleeve includes surrounds around the resilientclips preventing dislodgement of the upper flange portion from the upperrail of the formwork.

Preferably, the sleeve includes crushable internal lateral movementvoids located at opposed sides of a cavity for receiving the dowel.

Preferably, the sleeve includes an expansion void.

Preferably, the sleeve portion includes internal ribs which provideinterference on insertion of the dowel.

In a preferred form, the sleeve includes centering ribs which, when thesleeve is clipped on to the formwork, protrude into a dowel slot of theformwork to prevent lateral misalignment of the sleeve and the slot.

There is also disclosed a concrete footpath formwork system including asideform for forming adjacent concrete panels of a footpath, a doweladapted to extend through the sideform for transferring load between theadjacent concrete panels, and a sleeve for receiving the dowel, whereinthe sleeve is adapted to clip on to the sideform.

There is also disclosed an articulating dowel system, including a doweland a dowel sleeve, wherein the dowel includes a cam portion locatedwithin the sleeve to allow the dowel to pivot relative to the dowelsleeve.

Preferably, the cam portion has a forward rounded part to facilitatepivoting of the dowel relative to the dowel sleeve, and a rearwardtapered part extending rearwardly and tapering inwardly from the roundedpart to limit pivotal movement of the dowel relative to the dowelsleeve. More preferably, the rounded part and the tapered part define apivot with upper and lower stops to allow limited upward and downwardpivoting of the dowel relative to the dowel sleeve.

Preferably, the dowel is formed from corrosion-free material.

In a preferred form, the sleeve is adapted to clip on to a sideform forforming adjacent concrete panels.

There is also disclosed a concrete footpath formwork system including asideform for forming adjacent concrete panels of a footpath, a doweladapted to extend through the sideform for transferring load between theadjacent concrete panels, and a sleeve for receiving the dowel, whereinthe dowel is arranged to pivot upwardly and/or downwardly relative tothe sleeve.

Preferably, the concrete footpath formwork system includes a seal fittedto the sideform, wherein the seal has an aperture through which a tongueof the dowel in inserted such that the seal operates to seal between thedowel and the sideform against concrete ingress.

There is also disclosed a formwork panel for forming adjacent concretebodies, wherein the formwork panel is adapted to be compressible onexpansion of the concrete bodies.

Preferably, the formwork panel is substantially planar. More preferably,the formwork panel is substantially planar to be in a planesubstantially perpendicular to a travel surface formed by upper surfacesof the concrete bodies.

In a preferred form, the formwork panel is extruded.

Preferably, the formwork panel has at least one internal void tofacilitate sacrificial compression of the formwork panel on expansion ofthe concrete bodies.

Preferably, the formwork panel has a pair of opposed sideform wallsconnected by at least one sacrificial rib defining an internal voidbetween the opposed sideform walls.

Preferably, the formwork panel has a pair of opposed rails along atleast one side of the formwork panel, the opposed rails defining achannel for slideable mounting of an accessory to the formwork panel.More preferably, the channel enables the formwork panel to be connectedto another like formwork panel by inserting one end of a joiner plate inthe channel the formwork panel and an opposite end of the joiner platein the channel of the like formwork panel.

Preferably, the formwork panel has a constant cross-sectional shapealong its length and is able to be cut to length accordingly.

Preferably, the formwork panel has an upper capping, the capping havingsidewalls and a top surface arranged to be level with upper surfaces ofthe concrete bodies.

There is also disclosed a formwork panel for forming adjacent concretebodies, the formwork panel having a formwork panel body and a formworkpanel capping arranged to be selectively moved from a coupled conditionin which the formwork panel capping is coupled to the formwork panelbody to form a surface level with upper surfaces of the concrete bodiesand a decoupled condition in which at least part of the formwork panelcapping is decoupled from the formwork panel body so as to form a wellbetween the concrete bodies.

Preferably, the well has a predetermined depth.

Preferably, the formwork capping is formed with a frangible part whichis torn to move the formwork panel capping from the coupled condition tothe decoupled condition. More preferably, the frangible part is locatedbetween an upper portion of the capping and a lower portion of thecapping such that tearing the frangible part separates the upper portionof the capping from the lower portion of the capping.

Preferably, the capping includes opposed arms extending laterallyoutwardly from opposite sides of the capping such that distal ends ofthe arms are embedded in the concrete bodies. More preferably, each ofthe distal ends has an enlarged portion to facilitate retainment in theconcrete.

In one form, the opposed arms extend outwardly from the lower portion ofthe capping.

Preferably, the arms are able to be stretched to accommodate relativeoutward movement/retraction of the concrete bodies.

BRIEF DESCRIPTION OF THE DRAWINGS

Preferred embodiments of the invention will be described, by way ofnon-limiting example only, with reference to the accompanying drawingsin which:

FIG. 1 shows a top view of a dowel;

FIG. 2 shows a perspective view of the dowel;

FIG. 3 shows an opposite side perspective view of the dowel;

FIGS. 3a to 3c show top and perspective views of alternative dowelshaving a different shape;

FIG. 4 shows bottom detail of a corrosion-free plate dowel;

FIG. 5 shows a cross rib structure of the dowel in plan view;

FIG. 6 shows a sealing flange of the dowel when used to seal against asideform;

FIG. 7 shows a side view of a clip-on cantilevered plate dowel sleeve;

FIG. 8 shows a perspective view of the sleeve;

FIG. 9 shows a side cutaway view of an articulating dowel system;

FIG. 10 shows a perspective view of the articulating dowel system;

FIG. 11 shows a side cross-sectional view of an articulating dowelsystem with 50 mm vertical lift;

FIG. 12 shows a cam component of the articulating dowel system;

FIG. 13 shows a perspective view of a multi-functional formwork panel;

FIG. 14 shows a cross-sectional view of the multi-functional formworkpanel;

FIG. 15 shows two multi-functional formwork panels connected together;

FIG. 16 shows a multi-functional formwork panel having a cappinginstalled thereon;

FIG. 17 shows joining of two multi-functional formwork panels;

FIG. 18 shows a Rip-A-Strip sealant well capping in place;

FIG. 19 shows the capping removed to form a well;

FIG. 20 shows the well filled with material;

FIG. 21 shows stretching of an arm of the capping;

FIG. 22 is a perspective view of a twist and lock stake bracket andstake;

FIG. 23 shows the bracket in an unlocked condition;

FIG. 24 shows the bracket in a locked condition;

FIG. 25 shows the bracket and stake in place on the multi-functionalformwork panel;

FIG. 26 shows two joined formwork panels, each having a stake andbracket fitted thereto;

FIG. 27 shows detail of the multi-functional formwork panel havingopposed rails down one side;

FIG. 28 shows detail of the bracket and its attachment to the opposedrails; and

FIGS. 29a to 29d show a clip-on foot for supporting the formwork panel.

DETAILED DESCRIPTION

With reference to FIGS. 1 to 6, there is shown a dowel 10 forcontrolling relative level between adjacent concrete panels, such thatone concrete panel of a footpath or the like will stay level with aneighbouring concrete panel so as to maintain a level walking path andto avoid a tripping hazard. The dowel 10 is formed of corrosion-freematerial so as to avoid corrosion of the dowel 10.

The adjacent panels being kept level by the dowel 10 are formed ofconcrete, however it is possible that the dowel 10 and associatedformwork system may be used for maintaining a level between panels castfrom a different material. As shown in FIGS. 1 to 6, the dowel 10 isformed from material which is non-metallic and is preferably formed of apolymer material or other plastic material which is not prone tocorrosion as are typical metal dowels. In one particular form, the dowel10 may be formed of a metal material portion covered in a polymermaterial portion. In that case, the polymer material portion sealswithin itself the metal material portion in an air-tight seal so as toprotect the metal material portion from corrosion from oxidation.

FIGS. 3a to 3c show top and perspective views of alternative dowels 10having a different shape. Whereas the dowel 10 shown in FIGS. 1 to 3 isin the form of a six-sided shape (being rectangular at one side of theflange 18 and having a tapered portion at the other side of the flange),the dowels 10 shown in FIGS. 3a to 3c are four-sided. More specifically,the four-sided dowels 10 of FIGS. 3a to 3c have front and rear sideswhich are mutually parallel, as well as left and right sides which taperat the same angle on both sides of the flange 18.

As can be seen in FIGS. 4 and 5, the dowel 10 is substantially planarand is generally in the form of a plate. Opposed edges 12 of the dowel10 are tapered inwardly toward a central axis of the dowel 10, thecentral axis lying within a plane of the dowel 10, the central axislying along the central vertical rib shown in the orientation of FIG. 5.Tapering of the opposed edges 12 of the plate dowel 10 is configured toallow, in situ, lateral movement between the adjacent concrete panelswhen the panels contract during drying of the concrete. The dowel 10 mayhave a cross-ribbed structure on an upper surface and on a lower surfaceto increase structural rigidity.

As shown in FIG. 5, the dowel 10 may have rounded corners 14 which maybe radiused. The dowel 10 may also have rounded edges 16 (see FIG. 4)which may be radiused.

The dowel 10 may have a flange 18 arranged to abut against a sideform 20(see FIG. 6) through which the dowel 10 is inserted. The flange 18extends in a plane perpendicular to the plane of the plate dowel 10. Theflange 18 is adapted to seal against the sideform 20 so as to preventingress of concrete to a joint between adjacent concrete panels.

The dowel may be adapted for use in a non-industrial application and maybe adapted for being cast into a concrete footpath so as to transferload between adjacent concrete panels of the footpath.

Accordingly, there is disclosed a corrosion-free tapered plate dowelload transfer system. The tapered plate dowel provides lateral movementonce the joint contracts. The double-sided cross-ribbed structureprovides increased structural rigidity (providing increased bendingstrength) by breaking up un-reinforced horizontal surfaces. Corners andedges are radiused to prevent point loads giving even distributed forcesat the dowel perimeter. The flange 18 on the dowel acts as a sealpreventing concrete ingress into the joint. The flange 18 may optionallyincorporate a rubber seal to facilitate the sealing effect.

With reference to FIG. 6, there is shown a concrete footpath formworksystem 22 including a sideform 20 for forming adjacent concrete panelsof a footpath and a dowel 10 adapted to extend through the sideform 20for transferring load between the adjacent concrete panels, wherein thedowel is formed of corrosion-free material. The sideform 20 is formed asa unitary panel having one or more ribs 24 between opposed faces 26 tofacilitate crushing of the sideform 20 in response to expansion of theconcrete panels.

With reference to FIGS. 7 and 8, there is shown a sleeve 28 for a dowel10, wherein the sleeve 28 is adapted to clip on to formwork throughwhich the dowel 10 is inserted. With reference to FIG. 7, the sleeve 28includes a flange 30 for abutting against the formwork 20, a sleeveportion 32 extending from the flange 30, an upper rib 34 supporting thesleeve portion 32 relative to the flange 30 and a lower rib 36supporting the sleeve portion 32 relative to the flange 30. The flange30 includes an upper flange portion 38 for engagement with an upper rail40 of the formwork and a lower flange portion 42 having resilient clips44 for clipping behind a lower rail 46 of the formwork.

The sleeve 28 may include surrounds around the resilient clips 44preventing dislodgement of the upper flange portion 38 from the upperrail 40 of the formwork. The sleeve 28 may include crushable internallateral movement voids 48 located at opposed sides of a cavity 50 forreceiving the dowel 10. The sleeve 28 may include an expansion void andthe sleeve portion 32 may include internal ribs 52 which provideinterference on insertion of the dowel 10. The sleeve 28 includescentering ribs 54 which, when the sleeve 28 is clipped on to theformwork, protrude into a dowel slot of the formwork to prevent lateralmisalignment of the sleeve 28 and the slot.

Accordingly, there is shown a concrete footpath formwork system 22including a sideform 20 for forming adjacent concrete panels of afootpath, a dowel 10 adapted to extend through the sideform 20 fortransferring load between the adjacent concrete panels, and a sleeve 28for receiving the dowel 10, wherein the sleeve 28 is adapted to clip onto the sideform 20.

Features:

Fastener-less pivoting clip on function to extruded formwork.

Resists sleeve pull down by bracing itself above sleeve body with lockedin cantilevered ribs.

Ribs below the sleeve brace sleeve in compression.

Surrounds around the clips prevent sleeve dislodgement from top pivotingpoint.

Incorporates 5 mm crushable internal lateral movement voids and a 10 mmexpansion void.

Corners and edges are radiused to prevent point loads giving evendistributed forces at the sleeve perimeter.

Internal ribs provide interference to the plate dowel upon insertion toprevent accidental pull-out during concrete pouring.

Centring ribs protrude into the slot on formwork preventing lateralmisalignment of the sleeve with the slot.

With reference to FIGS. 9 to 12, there is also disclosed an articulatingdowel system 56, including a dowel 58 and a dowel sleeve 60, wherein thedowel 58 includes a cam portion 62 located within the sleeve 60 to allowthe dowel 58 to pivot relative to the dowel sleeve 60.

The cam portion 62 has a forward rounded part 64 (see FIG. 12) tofacilitate pivoting of the dowel 58 relative to the dowel sleeve 60, anda rearward tapered part 66 extending rearwardly and tapering inwardlyfrom the rounded part 64 to limit pivotal movement of the dowel 58relative to the dowel sleeve 60. The rounded part 64 and the taperedpart 66 define a pivot with upper and lower stops to allow limitedupward and downward pivoting of the dowel 58 relative to the dowelsleeve 60. The dowel 58 may be formed from corrosion-free material suchas, for example, polymer material. The sleeve 60 may be adapted to clipon to a sideform 20 for forming adjacent concrete panels 68.Accordingly, there is shown a concrete footpath formwork systemincluding a sideform 20 for forming adjacent concrete panels 68 of afootpath, a dowel 58 adapted to extend through the sideform 20 fortransferring load between the adjacent concrete panels 68, and a sleeve60 for receiving the dowel 58, wherein the dowel 58 is arranged to pivotupwardly and/or downwardly relative to the sleeve 60. With reference toFIG. 10, the concrete footpath formwork system may include a seal 70fitted to the sideform 20, the seal 70 having an aperture 72 throughwhich a tongue 74 of the dowel 58 is inserted such that the seal 70operates to seal between the dowel 58 and the sideform 20 againstconcrete ingress.

Features:

Corrosion-free articulating dowel system which allows for deflectioncontrol on light duty concrete pavements when joint articulates due totree roots or reactive soil.

Allows up to 50 mm of simultaneous vertical lift on slabs whilemaintaining deflection control, load transfer, lateral dowel movementand expansion capabilities.

CAM component of dowel allows dowel rotation while carrying loadhorizontally across joint.

Fastener-less pivoting clip on function of system to extruded formwork.

Resists sleeve pull down by bracing itself above sleeve body with lockedin cantilevered ribs.

Ribs below the sleeve brace sleeve in compression.

Surrounds around the clips prevent sleeve dislodgement from top pivotingpoint.

Incorporates 5 mm crushable internal lateral movement voids and a 10 mmexpansion void.

Centring ribs protrude into the slot on formwork preventing lateralmisalignment of the sleeve with the slot.

Dowel is kept horizontal during concrete pour by crushable positioningribs located internally in the sleeve.

System is sealed off from concrete ingress with an additional seal.

With reference to FIGS. 13 to 17, there is shown a formwork panel 76 forforming adjacent concrete bodies, wherein the formwork panel 76 isadapted to be compressible on expansion of the concrete bodies. Theconcrete bodies may be in the form of adjacent concrete panels of afootpath or the like.

The formwork panel 76 may be substantially planar to be in a planesubstantially perpendicular to a travel surface formed by upper surfacesof the concrete bodies. For example, as shown in FIG. 14, the concretebodies 68 have upper surfaces 78 and the formwork panel 76 issubstantially perpendicular to a travel surface (e.g. footpath) formedby the upper surfaces 78. The planar nature of the formwork panel 76 isin contrast to existing formwork which has a cross-sectional shape inthe form of an inverted T.

The formwork panel 76 may be extruded with a constant cross-sectionalshape along its length such that the formwork panel 76 is able to be cutto length so as to suit a particular application. The formwork panel 76has at least one internal void 80 to facilitate sacrificial compressionof the formwork panel 76 on expansion of the concrete bodies 68. Theformwork panel 76 has a pair of opposed sideform walls 82 connected byat least one sacrificial rib 84 defining an internal void 80 between theopposed sideform walls 82. The formwork panel 76 has a pair of opposedrails 86 along at least one side of the formwork panel 76, the opposedrails 86 defining a channel for slideable mounting of an accessory tothe formwork panel 76. The channel enables the formwork panel 76 to beconnected to another like formwork panel 76 (see FIG. 17) by insertingone end of a joiner plate 88 in the channel of the formwork panel 76 andan opposite end of the joiner plate in the channel of the like formworkpanel 76.

Features:

Compressible extruded sacrificial formwork panel and capping.

Crushable up to 10 mm to allow for thermal expansion at joint.

Multi-functional utility channel which allows for components to beattached continuously along the length.

Retains function as an expansion joint and functionally of componentswhen cut.

Panels can be joined with joiner plate at any point when cut.

The formwork panel 76 may also have an upper capping 90, the capping 90having side walls 92 and a top surface 94 arranged to be level with theupper surfaces 78 of the concrete bodies 68, as shown in FIG. 18. Thecapping 90 may be adhered to a top of the formwork panel 76 as shown inFIGS. 18 to 21, or may be resiliently clipped or slid on to a topportion of the formwork panel 76 as shown in FIGS. 16 and 17.

With reference to FIGS. 18 to 21 there is shown a formwork panel 76 forforming adjacent concrete bodies 68, the formwork panel having aformwork panel body 96 and a formwork panel capping 90 arranged to beselectively moved from a coupled condition (see FIG. 18) in which theformwork panel capping 90 is coupled to the formwork panel body 96 toform a surface level with upper surfaces 78 of the concrete bodies 68and a decoupled condition (see FIG. 19) in which at least part of theformwork panel capping 90 is decoupled from the formwork panel body 96so as to form a well 98 between the concrete bodies 68. The well 98 mayhave a predetermined depth being the height of the capping 90, less athickness of a floor of the capping 90.

The formwork capping 90 may be formed with a frangible part 100 which istorn to move the formwork panel capping 90 from the coupled condition tothe decoupled condition. The frangible part 100 may be located betweenan upper portion of the capping 90 and a lower portion of the capping 90such that tearing the frangible part 100 separates the upper portion ofthe capping 90 from the lower portion of the capping 90. FIG. 18 showsthe upper portion and lower portion of the capping 90 connected whereasFIG. 19 shows the upper portion removed from the lower portion. Thecapping 90 may include opposed arms 102 extending laterally outwardlyfrom opposite sides of the capping 90 such that distal ends of the arms102 are embedded in the concrete bodies 68. Each of the distal arms 102may have an enlarged portion 104 to facilitate retainment in theconcrete. The opposed arms 102 may extend outwardly from the lowerportion of the capping 90, and the arms 102 may be able to be stretchedto accommodate relative outward movement/retraction of the concretebodies (see FIG. 21). Advantageously, by virtue of the opposed arms 102being able to stretch in this way, they stretch with joint openingcovering the gap preventing epoxies from running down the joint gap andacting as a debris and weed deterrent.

Features:

Flexible permanent/removable capping.

Option 1 to remain permanently with joint.

Option 2 to be ripped off joint (once poured) at tear points to allowscrabbling of joint and to create a welled rebate for use of jointsealants.

Wings on side anchor into concrete (either side).

Ribs stretch with joint opening covering the gap preventing epoxies fromrunning down joint gap and act as a debris and weed deterrent.

Turning to FIGS. 22 to 28, there is shown a concrete footpath formworksystem 22, including a formwork panel 76 for forming adjacent concretepanels of a footpath, and a support bracket 106 for supporting thesystem 22 relative to a ground surface. The formwork panel 76 has a pairof vertically opposed longitudinal rails 86, and the support bracket 106has an engagement formation 108 which has an unlocked orientation (seeFIG. 23) for inserting the formation 108 between the opposed rails toabut against the formwork panel 76 and a rotated, locked orientation(see FIG. 24) wherein the formation 108 is locked by the rails 86against lateral withdrawal from the formwork panel 76.

The formation 108 is unlocked from the opposed rails 86 by rotation ofthe formation 108 about a lateral axis of the system from the lockedorientation to the unlocked orientation.

The bracket 106 is supported relative to the ground surface by a stake110 and the bracket 106 has an aperture 112 (see FIG. 28) for receivingthe stake. The stake is threaded (see FIG. 22) and has opposed faces114, the bracket 106 being formed with rotationally spaced engagementportions such that the stake 110 is able to be freely slid along itslongitudinal axis through the bracket 106 and locked by rotating thestake 110 about its longitudinal axis relative to the bracket 106.

As can be seen in FIG. 28, the bracket 106 terminates at a lower endthereof above a lower edge of the formwork panel 76. The formwork panel76 is formed as a unitary part and has a pair of opposed side walls 82formed integrally with at least one rib 84, the opposed side walls 82defining a void 80 therebetween. In the example shown in FIG. 27, theformwork panel 76 has six such ribs 84, comprising two external ribs andfour internal ribs. The bracket 106 may itself be formed as a unitarypart and may have a central rib 116 extending along the length of thebracket 106.

FIGS. 29a to 29d show a clip-on foot 120 for supporting the formworkpanel 76. In particular, there is provided a clip-on foot 120 having aportion 122 a and 122 b for clipping on to a bottom tapered rail of theformwork panel 76. The portion for clipping on to the bottom taperedrail is formed of long upright support 122 a and a short upright support122 b. The long upright support 122 a has a strengthening brace 124extending from the long upright support 122 a downwardly and outwardlyto be supported along a horizontal foot portion of the clip-on foot 120.The horizontal foot portion also has a pair of opposed notches 126 forsoil nailing of the formwork profile using pins. Advantageously, theclip-on foot 120 enables the formwork profile to be freestanding, withmultiple (for example three or four) clip-on feet to be fitted along aspan of the formwork. The clip-on foot 120 enables the formwork to bemoved to a final position, with the notches 126 being used for pinningthe formwork panel 76 in position directly in the soil.

Features:

Formwork bracing and height adjustment system.

Attached to any point of the formwork panel utility channel with a twistand lock CAM base.

Inserted and turned 45 degrees to lock.

Fastener-less attachment process is quick and intuitive.

Central rib-based shape provides additional anchorage of the joint inone slab (pour through).

Removable and reusable before second pour (stop pour).

Twist and lock stake lock off.

System Features Overview:

Application: Concrete Pavements (Footpaths, Bikeways) for pedestrian andlight vehicular traffic in urban residential areas, parklands,commercial (retail) public spaces and civil infrastructure.

The system has been designed to satisfy the requirements of AustralianStandard: AS 3727.1:2016 Residential Pavements

A modular solution, with the capability to cast a range of slabthicknesses 75 mm, 100 mm, 125 mm & 150 mm. Modular sections arejoinable to cast pavements up to (and greater than) 4 m in width.

A self-supporting design, that is economical to freight, and is easilyassembled on site.

The solution must be non-corrosive for use in bayside applications ordecorative pavement streetscapes.

Must provide for thermal expansion and contraction to a maximum jointgap thickness of 10 mm.

A joint system which minimises the impact of pavement slab heavingcaused by (1) Tree Roots or (2) Reactive Soil.

A joint system that controls deflection under the conditions slabheaving caused by: (1) Tree Roots or (2) Reactive Soil

While various embodiments of the present invention have been describedabove, it should be understood that they have been presented by way ofexample only, and not by way of limitation. It will be apparent to aperson skilled in the relevant art that various changes in form anddetail can be made therein without departing from the spirit and scopeof the invention. Thus, the present invention should not be limited byany of the above described exemplary embodiments.

The reference in this specification to any prior publication (orinformation derived from it), or to any matter which is known, is not,and should not be taken as an acknowledgment or admission or any form ofsuggestion that that prior publication (or information derived from it)or known matter forms part of the common general knowledge in the fieldof endeavour to which this specification relates.

Throughout this specification and the claims which follow, unless thecontext requires otherwise, the word “comprise”, and variations such as“comprises” and “comprising”, will be understood to imply the inclusionof a stated integer or step or group of integers or steps but not theexclusion of any other integer or step or group of integers or steps.

1-10. (canceled)
 11. A concrete formwork system for forming adjacentconcrete panels on a ground surface, said concrete formwork systemcomprising: a formwork panel including a pair of longitudinallyextending spaced-apart vertically opposed rails; and a support bracketincluding an engagement formation insertable between the opposed railswhen in an unlocked orientation and thereafter rotatable to a lockedorientation relative to the opposed rails such that the engagementformation is locked by the opposed rails against lateral withdrawal fromthe formwork panel.
 12. The concrete formwork system of claim 11,wherein when the engagement formation is in the locked orientation, theengagement formation is unlockable from the opposed rails by rotation ofthe engagement formation about a lateral axis.
 13. The concrete formworksystem of claim 11, which includes a stake engageable with the groundsurface, and wherein the support bracket defines an aperture configuredto receive the stake.
 14. The concrete formwork system of claim 13,wherein the stake is threaded.
 15. The concrete formwork system of claim14, wherein the threaded stake has opposed faces and the support bracketincludes rotationally spaced-apart engagement portions such that thestake is able to be freely slid through the support bracket and islockable in the support bracket by rotation of the stake about itslongitudinal axis relative to the support bracket.
 16. The concreteformwork system of claim 11, wherein the support bracket terminatesabove a lower edge of the formwork panel when the engagement formationis in the locked orientation relative to the opposed rails of theformwork panel.
 17. The concrete formwork system of claim 11, whereinthe formwork panel is formed as a unitary part.
 18. The concreteformwork system of claim 11, wherein the formwork panel includes a pairof longitudinally extending opposed sidewalls, the opposed sidewallsdefining a void therebetween.
 19. The concrete formwork system of claim11, wherein the support bracket is formed as a unitary part.
 20. Theconcrete formwork system of claim 11, wherein the support bracketincludes a central rib extending along the length of the supportbracket.
 21. A concrete formwork system for forming adjacent concretepanels on a ground surface, said concrete formwork system comprising: aformwork panel including a pair of longitudinally extending opposedsidewalls and a pair of longitudinally extending spaced-apart verticallyopposed rails laterally extending from one of the side walls; a stakeengageable with the ground surface; and a support bracket including anengagement formation insertable between the opposed rails and lockableby the opposed rails such that the engagement formation is locked by theopposed rails against lateral withdrawal from the formwork panel, thesupport bracket defining an aperture configured to receive the stake.22. The concrete formwork system of claim 21, wherein the pair ofopposed sidewalls define a void therebetween.
 23. The concrete formworksystem of claim 21, wherein the stake is threaded.
 24. The concreteformwork system of claim 23, wherein the threaded stake has opposedfaces and the support bracket includes rotationally spaced-apartengagement portions such that the stake is able to be freely slidthrough the support bracket and is lockable in the support bracket byrotation of the stake about its longitudinal axis relative to thesupport bracket.
 25. The concrete formwork system of claim 21, whereinthe support bracket terminates above a lower edge of the formwork panelwhen the engagement formation is locked by the opposed rails of theformwork panel.
 26. The concrete formwork system of claim 21, whereinthe formwork panel is formed as a unitary part.
 27. The concreteformwork system of claim 21, wherein the support bracket is formed as aunitary part.
 28. A concrete formwork system for forming adjacentconcrete panels on a ground surface, said concrete formwork systemcomprising: a formwork panel including first and second longitudinallyextending spaced-apart vertically opposed rails; and a support bracketincluding an engagement formation having a first edge, a second edge, athird edge, and a fourth edge, the engagement formation insertablebetween the first and second opposed rails such that the first edge isadjacent to the first rail and the second edge is adjacent to the secondrail, and thereafter rotatable to a locked orientation relative to thefirst and second opposed rails wherein the third edge engages and isheld by the first rail and wherein the fourth edge engages and is heldby the second rail.
 29. The concrete formwork system of claim 28,wherein the support bracket terminates above a lower edge of theformwork panel when the engagement formation is in the lockedorientation relative to the opposed rails of the formwork panel.
 30. Theconcrete formwork system of claim 28, wherein the first edge and thethird edge extend at an obtuse angle relative to each other and whereinthe second edge and the fourth edge extend at an obtuse angle relativeto each other.